ELECTRIC WINTERIZATION KIT

ARMY TM 9-6115-464-12 AIR FORCE TO 35C2-3-445-1 NAVY NAVFAC P-8-624-12 2-23 ELECTRIC WINTERIZATION KIT. a. General. The electric winterization kit uses an external power source to maintain the engine coolant and lubri- cating oil at normal operating temperature in standby situations which require immediate starting of the gener- ator set. The kit will function effectively down to an ambient temperature of -65°F (-53.9°C). Coolant from the radiator is pumped into the heater assembly where it is heated by the heater elements. The heated coolant is circulated through the heat exchanger in the engine oil pan and through the cylinder block. After leaving the cylinder block, the coolant is returned to the radiator. Power for operation of the electric winterzation kit may be obtained from any 208 to 240 volt, 50/60 Hz or 400 Hz, single phase source. b. Controls and Indicators. (1) (2) (3) (4) Circuit Breaker (Figure 2-11). The circuit breaker is a trip-free, push-pull type circuit breaker. It opens and closes the circuit to the winterization kit controls. POWER ON Indicator (Figure 2-11). The power on indicator is a press-to-test type indicator light. It illuminates when power is applied to the heater control circuits. ON-OFF Switch (Figure 2-11). The ON-OFF switch is a two-pole, two position switch. It opens and closes the two heater and the coolant pump motor circuits. HEATER ON Indicator (Figure 2-11). The HEATER ON indicator is a press-to-test type indicator light. It illuminates when the kit is in operation. c. Operation. Refer to Figure 2-11 for operating instructions. 2-24 WHEEL MOUNTING KIT. a. General. The wheel mounting kit extends the mobility of the generator set. It consists of a pair of two-wheeled axles which are bolted to the generator set skid frame. The front axle is equipped with a tow bar and safety chain. The front wheels are swivel mounted for steering. The rear axle is equipped with a parking brake. b. Using the Wheel Mounting Kit. Refer to Figure 2-12 for operating instructions. 2-25 LOAD BANK KIT. a. General. The load bank kit is an air cooled, balanced, three phase resistive load which may be operated at either 120/208 or 240/416 volts. It provides up to 50 percent of the generator set rated load to minimize carbon buildup in the engine while the generator set is carrying a light load. The load bank incorporates protective devices which automatically removes its load should the generator become overloaded. The load bank kit will also automatically cease operation in the event that it overheats. b. Controls and Indicators. (1) (2) (3) (4) (5) Voltage Selector Connectors (Figure 2-13). The voltage selector connectors are electrical connec- tors. They are used to reconnect the load bank circuits for 120/208 Vac or 240/416 Vac operation. Over Temperature Reset Switch (Figure 2-13). The OVER TEMPERATURE RESET switch is a triple circuit breaker. The switch trips automatically to open the load bank circuits to remove the unit from operation in the event of overheating. It is reset manually. Load Selector Switch (Figure 2-13). The LOAD SELECTOR switch is a five position rotary type switch. It is graduated in 12.5 percent increments which is 1/8 of the generator set rated load. It actu- ates the load bank power circuits. Load Bank Power On Indicator (Figure 2-13). The LOAD BANK POWER ON indicator is a press-to- test type indicator light with a red lens. It illuminates when power is applied to the load bank. Mode Selector Switch. The mode selector switch is a two position switch. When placed in the AUTO position, the load bank will automatically dump the load in the event that generator set load exceeds 81% of rated value. When the switch is placed in MANUAL position, the load must be manually removed. c. Operation. Refer to Figure 2-13 for operating instructions. 2-27